fix: Missing typed variants of iterator and iterable (#4832)

Author: sizmailov

include/pybind11/typing.h

@@ -45,6 +45,16 @@ class Set : public set {
     using set::set;
 };
 
+template <typename T>
+class Iterable : public iterable {
+    using iterable::iterable;
+};
+
+template <typename T>
+class Iterator : public iterator {
+    using iterator::iterator;
+};
+
 template <typename Signature>
 class Callable;
 
@@ -85,6 +95,16 @@ struct handle_type_name<typing::Set<T>> {
     static constexpr auto name = const_name("set[") + make_caster<T>::name + const_name("]");
 };
 
+template <typename T>
+struct handle_type_name<typing::Iterable<T>> {
+    static constexpr auto name = const_name("Iterable[") + make_caster<T>::name + const_name("]");
+};
+
+template <typename T>
+struct handle_type_name<typing::Iterator<T>> {
+    static constexpr auto name = const_name("Iterator[") + make_caster<T>::name + const_name("]");
+};
+
 template <typename Return, typename... Args>
 struct handle_type_name<typing::Callable<Return(Args...)>> {
     using retval_type = conditional_t<std::is_same<Return, void>::value, void_type, Return>;

tests/test_pytypes.cpp

@@ -828,6 +828,8 @@ TEST_SUBMODULE(pytypes, m) {
     m.def("annotate_dict_str_int", [](const py::typing::Dict<py::str, int> &) {});
     m.def("annotate_list_int", [](const py::typing::List<int> &) {});
     m.def("annotate_set_str", [](const py::typing::Set<std::string> &) {});
+    m.def("annotate_iterable_str", [](const py::typing::Iterable<std::string> &) {});
+    m.def("annotate_iterator_int", [](const py::typing::Iterator<int> &) {});
     m.def("annotate_fn",
           [](const py::typing::Callable<int(py::typing::List<py::str>, py::str)> &) {});
 }

tests/test_pytypes.py

@@ -926,6 +926,20 @@ def test_set_annotations(doc):
     assert doc(m.annotate_set_str) == "annotate_set_str(arg0: set[str]) -> None"
 
 
+def test_iterable_annotations(doc):
+    assert (
+        doc(m.annotate_iterable_str)
+        == "annotate_iterable_str(arg0: Iterable[str]) -> None"
+    )
+
+
+def test_iterator_annotations(doc):
+    assert (
+        doc(m.annotate_iterator_int)
+        == "annotate_iterator_int(arg0: Iterator[int]) -> None"
+    )
+
+
 def test_fn_annotations(doc):
     assert (
         doc(m.annotate_fn)